CA3160120A1 - Couche de diffusion gazeuse pour piles a combustible - Google Patents
Couche de diffusion gazeuse pour piles a combustibleInfo
- Publication number
- CA3160120A1 CA3160120A1 CA3160120A CA3160120A CA3160120A1 CA 3160120 A1 CA3160120 A1 CA 3160120A1 CA 3160120 A CA3160120 A CA 3160120A CA 3160120 A CA3160120 A CA 3160120A CA 3160120 A1 CA3160120 A1 CA 3160120A1
- Authority
- CA
- Canada
- Prior art keywords
- gas diffusion
- diffusion layer
- fiber material
- property
- gradient
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 84
- 239000000446 fuel Substances 0.000 title claims abstract description 67
- 239000002657 fibrous material Substances 0.000 claims abstract description 80
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 230000000704 physical effect Effects 0.000 claims abstract description 8
- 239000011148 porous material Substances 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011248 coating agent Substances 0.000 claims description 13
- 239000002243 precursor Substances 0.000 claims description 13
- 229920000642 polymer Polymers 0.000 claims description 7
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 239000003575 carbonaceous material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 89
- 239000000835 fiber Substances 0.000 description 34
- 239000012528 membrane Substances 0.000 description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 229920000049 Carbon (fiber) Polymers 0.000 description 25
- 239000004917 carbon fiber Substances 0.000 description 25
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 22
- 239000004810 polytetrafluoroethylene Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 17
- 239000011230 binding agent Substances 0.000 description 16
- 238000009826 distribution Methods 0.000 description 15
- 239000001301 oxygen Substances 0.000 description 15
- 229910052760 oxygen Inorganic materials 0.000 description 15
- 239000003054 catalyst Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 13
- 238000005259 measurement Methods 0.000 description 13
- 230000035699 permeability Effects 0.000 description 13
- 239000000654 additive Substances 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 239000007788 liquid Substances 0.000 description 12
- 229920002239 polyacrylonitrile Polymers 0.000 description 12
- 238000003763 carbonization Methods 0.000 description 11
- 239000000123 paper Substances 0.000 description 11
- 238000005087 graphitization Methods 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 239000006229 carbon black Substances 0.000 description 9
- 235000012209 glucono delta-lactone Nutrition 0.000 description 9
- 229910002804 graphite Inorganic materials 0.000 description 9
- 239000010439 graphite Substances 0.000 description 9
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- -1 oxygen anions Chemical class 0.000 description 9
- 230000008859 change Effects 0.000 description 8
- 239000004745 nonwoven fabric Substances 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 230000000996 additive effect Effects 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 5
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 238000002459 porosimetry Methods 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 239000012298 atmosphere Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 238000000197 pyrolysis Methods 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000002134 carbon nanofiber Substances 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 238000007596 consolidation process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000001739 density measurement Methods 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 229910021389 graphene Inorganic materials 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000005011 phenolic resin Substances 0.000 description 3
- 229920001568 phenolic resin Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000002902 bimodal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009950 felting Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- HDNHWROHHSBKJG-UHFFFAOYSA-N formaldehyde;furan-2-ylmethanol Chemical compound O=C.OCC1=CC=CO1 HDNHWROHHSBKJG-UHFFFAOYSA-N 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000007243 oxidative cyclization reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0234—Carbonaceous material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0241—Composites
- H01M8/0245—Composites in the form of layered or coated products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Composite Materials (AREA)
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
La présente invention concerne une couche de diffusion gazeuse pour une pile à combustible comprenant a) un matériau fibreux électriquement conducteur plan et b) une couche microporeuse sur une des surfaces du matériau fibreux, la couche de diffusion gazeuse présentant en ce qui concerne sa surface de base (dans le plan x,y) au moins un gradient de propriété relativement à au moins une propriété chimique et/ou physique. L'invention concerne également un procédé de fabrication d'une telle couche de diffusion gazeuse, une pile à combustible qui contient cette couche de diffusion, ainsi que l'utilisation de la couche de diffusion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019131343.0A DE102019131343A1 (de) | 2019-11-20 | 2019-11-20 | Gasdiffusionslage für Brennstoffzellen |
| DE102019131343.0 | 2019-11-20 | ||
| PCT/EP2020/081095 WO2021099129A1 (fr) | 2019-11-20 | 2020-11-05 | Couche de diffusion gazeuse pour piles à combustible |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3160120A1 true CA3160120A1 (fr) | 2021-05-27 |
Family
ID=73172686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3160120A Pending CA3160120A1 (fr) | 2019-11-20 | 2020-11-05 | Couche de diffusion gazeuse pour piles a combustible |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20220393184A1 (fr) |
| EP (2) | EP4303968A3 (fr) |
| JP (1) | JP2023502262A (fr) |
| KR (1) | KR20220065000A (fr) |
| CN (1) | CN114641876A (fr) |
| CA (1) | CA3160120A1 (fr) |
| DE (1) | DE102019131343A1 (fr) |
| DK (1) | DK4062472T3 (fr) |
| TW (1) | TWI794685B (fr) |
| WO (1) | WO2021099129A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114221002B (zh) * | 2021-12-06 | 2024-03-15 | 极永新能源科技(上海)有限公司 | 一种用于质子交换膜燃料电池的高性能膜电极及其制备方法 |
| DE102022127228A1 (de) | 2022-10-18 | 2024-04-18 | Carl Freudenberg Kg | Gasdiffusionslage für Brennstoffzellen mit Eigenschaftsgradient und geringer plastischer Verformbarkeit und Verfahren zu ihrer Herstellung |
| CN116364947A (zh) * | 2023-03-10 | 2023-06-30 | 广东科创氢能源科技有限公司 | 一种具有梯度结构的燃料电池膜电极及其制备方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19840517A1 (de) * | 1998-09-04 | 2000-03-16 | Manhattan Scientifics Inc | Gasdiffusionsstruktur senkrecht zur Membran von Polymerelektrolyt-Membran Brennstoffzellen |
| DE10050512A1 (de) | 2000-10-11 | 2002-05-23 | Freudenberg Carl Kg | Leitfähiger Vliesstoff |
| JP4190478B2 (ja) * | 2004-10-22 | 2008-12-03 | 本田技研工業株式会社 | 固体高分子型燃料電池 |
| DE102005022484B4 (de) * | 2005-05-11 | 2016-02-18 | Carl Freudenberg Kg | Gasdiffusionsschicht und Anordnung umfassend zwei Gasdiffusionsschichten |
| US7785748B2 (en) * | 2006-04-03 | 2010-08-31 | University Of Delaware | Nano-based gas diffusion media |
| JP2007323874A (ja) * | 2006-05-31 | 2007-12-13 | Nissan Motor Co Ltd | 導電性多孔質支持体、これを用いたガス拡散層及びガス拡散層付き膜電極接合体 |
| JP2009238376A (ja) * | 2008-03-25 | 2009-10-15 | Equos Research Co Ltd | 燃料電池 |
| JP2009245871A (ja) * | 2008-03-31 | 2009-10-22 | Mizuho Information & Research Institute Inc | 燃料電池及び燃料電池に用いる電極構造体 |
| EP2228857A1 (fr) | 2009-03-06 | 2010-09-15 | Basf Se | Unités d'électrodes à membrane améliorées |
| KR20100109733A (ko) * | 2009-04-01 | 2010-10-11 | 삼성전자주식회사 | 연료전지용 전극, 이의 제조 방법 및 이를 구비한 연료전지 |
| WO2011100602A1 (fr) * | 2010-02-12 | 2011-08-18 | Revolt Technology Ltd. | Procédés de fabrication pour électrode oxydoréductrice |
| US9461311B2 (en) * | 2013-03-15 | 2016-10-04 | Ford Global Technologies, Llc | Microporous layer for a fuel cell |
| DE102014206333A1 (de) | 2014-04-02 | 2015-10-08 | Volkswagen Ag | Bipolarplatte sowie Brennstoffzelle mit einer solchen |
| JP6357923B2 (ja) * | 2014-07-01 | 2018-07-18 | 東レ株式会社 | ガス拡散電極、その製造方法および製造装置 |
| CN110112425B (zh) * | 2019-04-18 | 2021-12-24 | 上海交通大学 | 一种质子交换膜燃料电池的气体扩散层 |
-
2019
- 2019-11-20 DE DE102019131343.0A patent/DE102019131343A1/de active Pending
-
2020
- 2020-11-05 JP JP2022529423A patent/JP2023502262A/ja active Pending
- 2020-11-05 CA CA3160120A patent/CA3160120A1/fr active Pending
- 2020-11-05 US US17/776,235 patent/US20220393184A1/en active Pending
- 2020-11-05 EP EP23211343.1A patent/EP4303968A3/fr active Pending
- 2020-11-05 WO PCT/EP2020/081095 patent/WO2021099129A1/fr unknown
- 2020-11-05 CN CN202080077629.XA patent/CN114641876A/zh active Pending
- 2020-11-05 EP EP20803494.2A patent/EP4062472B1/fr active Active
- 2020-11-05 DK DK20803494.2T patent/DK4062472T3/da active
- 2020-11-05 KR KR1020227012508A patent/KR20220065000A/ko unknown
- 2020-11-20 TW TW109140871A patent/TWI794685B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220065000A (ko) | 2022-05-19 |
| EP4062472A1 (fr) | 2022-09-28 |
| EP4303968A2 (fr) | 2024-01-10 |
| JP2023502262A (ja) | 2023-01-23 |
| US20220393184A1 (en) | 2022-12-08 |
| EP4303968A3 (fr) | 2024-03-06 |
| WO2021099129A1 (fr) | 2021-05-27 |
| CN114641876A (zh) | 2022-06-17 |
| DE102019131343A1 (de) | 2021-05-20 |
| TW202121722A (zh) | 2021-06-01 |
| TWI794685B (zh) | 2023-03-01 |
| EP4062472B1 (fr) | 2024-01-17 |
| DK4062472T3 (da) | 2024-04-08 |
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Legal Events
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| EEER | Examination request |
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